STMicroelectronics Stepper motor driver mounting the L6474 in high power PowerSO package EVAL6474PD EVAL6474PD 数据表
产品代码
EVAL6474PD
This is information on a product in full production.
December 2012
Doc ID 022529 Rev 3
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L6474
easySPIN – fully integrated microstepping motor driver
Datasheet
−
production data
Features
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Operating voltage: 8 - 45 V
■
7.0 A output peak current (3.0 A r.m.s.)
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Low R
DS(on)
Power MOSFETs
■
Programmable power MOS slew-rate
■
Up to 1/16 microstepping
■
Current control with adaptive decay
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Non-dissipative current sensing
■
SPI interface
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Low quiescent and standby currents
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Programmable non-dissipative overcurrent
protection on all power MOS
protection on all power MOS
■
Two-level overtemperature protection
Applications
■
Bipolar stepper motor
Description
The L6474, realized in analog mixed signal
technology, integrates a dual low R
technology, integrates a dual low R
DS(on)
DMOS
full-bridge with all power switches equipped with
an accurate on-chip current sensing circuitry
suitable for non-dissipative current control and
overcurrent protections. Thanks to a new current
control, a 1/16 microstepping is achieved through
an accurate on-chip current sensing circuitry
suitable for non-dissipative current control and
overcurrent protections. Thanks to a new current
control, a 1/16 microstepping is achieved through
an adaptive decay mode which outperforms
traditional implementations.
traditional implementations.
All data registers, including those used to set
analogue values (i.e. current control value,
current protection trip point, dead time, etc.) are
sent through a standard 5 Mbit/s SPI.
analogue values (i.e. current control value,
current protection trip point, dead time, etc.) are
sent through a standard 5 Mbit/s SPI.
A very rich set of protections (thermal, low bus
voltage, overcurrent) makes the L6474 “bullet
proof” as required by the most demanding motor
control applications.
voltage, overcurrent) makes the L6474 “bullet
proof” as required by the most demanding motor
control applications.
HTSSOP28
POWERSO36
Table 1.
Device summary
Order code
Package
Packing
L6474H
HTSSOP28 Tube
L6474HTR
HTSSOP28
Tape and reel
L6474PD
POWERSO36 Tube
L6474PDTR
POWERSO36
Tape and reel